document.write( "Question 84179: Solve
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document.write( " x + y - z = 0
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document.write( " 2x - y + z = 6
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document.write( " -x + y + z = 8
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document.write( "Show your answers as (x,y,z) \n" );
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Algebra.Com's Answer #60625 by vertciel(183)![]() ![]() ![]() You can put this solution on YOUR website! Hello there,\r \n" ); document.write( "\n" ); document.write( "First of all, I recategorised your question.\r \n" ); document.write( "\n" ); document.write( "Now, with the math, you have a system of three equations here. You want to find what x, y, and z are so you have to get rid of the other words you don't want to find temporarily.\r \n" ); document.write( "\n" ); document.write( " x + y - z = 0 -- (1) \n" ); document.write( "2x - y + z = 6 -- (2) \n" ); document.write( "-x + y + z = 8 -- (3)\r \n" ); document.write( "\n" ); document.write( "Let's add or multiply the equations for which we can eliminate things the easier.\r \n" ); document.write( "\n" ); document.write( "(1) + (3): 2y = 8 --> y = 4\r \n" ); document.write( "\n" ); document.write( "(1) + (2): 3x = 6 --> x = 2\r \n" ); document.write( "\n" ); document.write( "I found x and y for you. Help yourself into finding z. \r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |